In an electrical circuit, energy never manifests as heat. In the case of a motor, the electricity travels through coils of wires in the armature to generate a magnetic field. These coils create a load as the motor spins. The windings also have a resistance measured in ohms.Resistance in a circuit changes some of the electrical energy into heat. The greater resistance or load on a circuit means more of the electrical energy is transformed into heat. But, heat never likes to stay put. You can see it with an infrared thermometer.The heat is not limited to the load or component with the resistance. The heat can travel through the wires and warm up the wires and connectors. Connectors can also be a source of resistance and generate heat. This is what causes a lot of electrical components to burn out on a vehicle.
展开▼
